Supply Line

Term from Firefighting industry explained for recruiters

A Supply Line refers to the main fire hose that brings water from a hydrant or water source to the fire engine or fire scene. Think of it like the main water highway that ensures firefighters have enough water to fight fires. It's typically a large-diameter hose (usually 4 or 5 inches wide) that can deliver large amounts of water quickly. When you see this term in resumes, it indicates experience with managing critical water supply operations during firefighting scenarios. This is different from smaller attack lines that firefighters use directly to spray water on fires.

Examples in Resumes

Established and managed Supply Line operations during major commercial structure fires

Trained junior firefighters on proper Supply Lines deployment and maintenance

Led water supply operations utilizing multiple Supply Line setups for large-scale industrial fires

Typical job title: "Firefighters"

Also try searching for:

Firefighter Fire Engineer Fire Apparatus Operator Driver/Operator Fire Lieutenant Water Supply Officer

Example Interview Questions

Senior Level Questions

Q: How would you handle a situation where multiple supply lines are needed for a large commercial fire?

Expected Answer: A senior firefighter should discuss coordination of water sources, calculating needed water flow, managing multiple engine companies, and ensuring continuous water supply while considering backup plans.

Q: What factors do you consider when determining supply line placement at a fire scene?

Expected Answer: Should explain considerations like distance to water source, terrain challenges, building access points, potential fire spread, and coordination with other responding units.

Mid Level Questions

Q: What are the common problems that can occur with supply lines and how do you address them?

Expected Answer: Should discuss issues like kinks in hose, pressure problems, connection leaks, and proper procedures for identifying and correcting these issues quickly.

Q: Explain the process of establishing a supply line from a hydrant to an engine.

Expected Answer: Should describe the step-by-step process including hydrant connection, hose deployment, proper securing techniques, and communication with the pump operator.

Junior Level Questions

Q: What is the difference between a supply line and an attack line?

Expected Answer: Should explain that supply lines are large diameter hoses bringing water from source to engine, while attack lines are smaller hoses used to directly fight fire.

Q: What safety considerations should be kept in mind when deploying a supply line?

Expected Answer: Should mention traffic safety, proper lifting techniques, avoiding kinks, securing connections, and clear communication with team members.

Experience Level Indicators

Junior (0-2 years)

  • Basic supply line deployment
  • Hydrant connection procedures
  • Basic hose maintenance
  • Understanding of water flow principles

Mid (2-5 years)

  • Multiple supply line operations
  • Pressure calculation and management
  • Training newer firefighters
  • Troubleshooting supply problems

Senior (5+ years)

  • Complex water supply operations
  • Strategic placement planning
  • Major incident management
  • Supply system design for large scenes

Red Flags to Watch For

  • Lack of knowledge about basic water supply operations
  • Unable to explain proper hose handling procedures
  • No experience with different types of water sources
  • Poor understanding of fire engine pumping operations

Related Terms